Nozzle sleeve of a nozzle assembly for cleaning heat exchanger tubes



FIG. 1 is a perspective view of a nozzle sleeve of a nozzle assembly for cleaning heat exchanger tubes of the invention;

FIG. 2 is a front elevational view of the invention;

FIG. 3 is a rear view of the invention;

FIG. 4 is a right end view of the invention as shown in FIG. 2;

FIG. 5 is a left end view of the invention as shown in FIG. 2; and,

FIG. 6 is a perspective view of the invention, the broken line showing of a nozzle core is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a nozzle sleeve of a nozzle assembly for cleaning heat exchanger tubes, as shown and described. 